Polythiophene Containing Thermally Removable Solubilizing Groups Enhances the Interface and the Performance of Polymer−Titania Hybrid Solar Cells

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Abstract
A polythiophene derivative containing thermally removable branched ester solubilizing groups has been prepared and tested as a processable organic semiconductor polymer with tunable electronic and chemical properties for hybrid polymer−inorganic solar cells. Thermal removal of the protecting group enhances the interface between the organic and inorganic components while also contributing to better light absorption, energy transfer, and overall cell performance.